Out of the box almost all my TR55's seemed to have a slightly bigger than .050 gap, almost .060. Just thought I'd let everyone know that its probably not a bad idea to check the gaps on your plugs before putting them in (instead of assuming theyre all .050)

 

i think all tr55s are gapped at .058 from the factory

 

Yep, you should always adjust your gap. I run Autolite 104 (TR6) at .040

 

Well guess my mechanic isnt as great as i thought he was, as im pulling out my old plugs they've been gapped so far at .060 (well closer to .062 or something), guess if it runs when you leave the shop you'll never know until you check em.
Oh btw the plugs my car was previously using were TR55GP (platium ones). When i was watching my mechanic install the plug a long time ago i dont recall him gapping them. I didnt know anything about gapping them either back in the day